GCU BIO-201 Exam 2 | Grand Canyon University –
Detailed Review Guide with Questions and Correct
Answers
1. Describe the significance of calcium ions in the transformation of the
osteoid matrix into mature bone.
Calcium ions are not involved in bone formation.
Calcium ions are primarily responsible for muscle contraction.
Calcium ions provide structural support to the osteoid matrix.
Calcium ions are essential for mineralization, which converts the
osteoid matrix into mature bone.
2. Describe the significance of the diaphysis in the process of ossification.
The diaphysis is where cartilage is replaced by fat during
ossification.
The diaphysis is the area where blood vessels enter the bone.
The diaphysis serves as a site for muscle attachment during
ossification.
The diaphysis is significant because it is the primary center of
ossification where bone formation begins during development.
3. Describe the purpose of arthroplasty in the context of joint health.
Arthroplasty involves the removal of bone spurs.
Arthroplasty is a procedure to enhance joint flexibility.
, Arthroplasty aims to restore function and relieve pain by
replacing a damaged joint.
Arthroplasty is used to strengthen ligaments around a joint.
4. Which type of bone cell is primarily responsible for bone resorption?
, Osteoblasts
Chondrocytes
Osteoclasts
Fibroblasts
5. Describe how friction and falls can lead to bursitis in the knee joint.
Friction and falls have no effect on the bursa.
Friction and falls can irritate the bursa, leading to inflammation
and pain.
Friction and falls strengthen the bursa, preventing injury.
Friction and falls only affect the ligaments, not the bursa.
6. Describe the role of parathyroid hormone and calcitriol in calcium
homeostasis.
Parathyroid hormone and calcitriol work together to increase
calcium levels in the blood by promoting calcium release from
bones and enhancing intestinal absorption.
Both hormones have no effect on calcium levels.
Calcitriol inhibits calcium absorption in the intestines.
Parathyroid hormone decreases calcium levels by promoting
excretion in the kidneys.
7. If a person experiences a tear in their ligaments surrounding a synovial
joint, what effect would this likely have on the joint's stability?
It would enhance the joint's range of motion.
It would have no effect on the joint's stability.
It would decrease the stability of the joint.
Detailed Review Guide with Questions and Correct
Answers
1. Describe the significance of calcium ions in the transformation of the
osteoid matrix into mature bone.
Calcium ions are not involved in bone formation.
Calcium ions are primarily responsible for muscle contraction.
Calcium ions provide structural support to the osteoid matrix.
Calcium ions are essential for mineralization, which converts the
osteoid matrix into mature bone.
2. Describe the significance of the diaphysis in the process of ossification.
The diaphysis is where cartilage is replaced by fat during
ossification.
The diaphysis is the area where blood vessels enter the bone.
The diaphysis serves as a site for muscle attachment during
ossification.
The diaphysis is significant because it is the primary center of
ossification where bone formation begins during development.
3. Describe the purpose of arthroplasty in the context of joint health.
Arthroplasty involves the removal of bone spurs.
Arthroplasty is a procedure to enhance joint flexibility.
, Arthroplasty aims to restore function and relieve pain by
replacing a damaged joint.
Arthroplasty is used to strengthen ligaments around a joint.
4. Which type of bone cell is primarily responsible for bone resorption?
, Osteoblasts
Chondrocytes
Osteoclasts
Fibroblasts
5. Describe how friction and falls can lead to bursitis in the knee joint.
Friction and falls have no effect on the bursa.
Friction and falls can irritate the bursa, leading to inflammation
and pain.
Friction and falls strengthen the bursa, preventing injury.
Friction and falls only affect the ligaments, not the bursa.
6. Describe the role of parathyroid hormone and calcitriol in calcium
homeostasis.
Parathyroid hormone and calcitriol work together to increase
calcium levels in the blood by promoting calcium release from
bones and enhancing intestinal absorption.
Both hormones have no effect on calcium levels.
Calcitriol inhibits calcium absorption in the intestines.
Parathyroid hormone decreases calcium levels by promoting
excretion in the kidneys.
7. If a person experiences a tear in their ligaments surrounding a synovial
joint, what effect would this likely have on the joint's stability?
It would enhance the joint's range of motion.
It would have no effect on the joint's stability.
It would decrease the stability of the joint.
